CN212466137U - Extension rod system for spine reoperation - Google Patents
Extension rod system for spine reoperation Download PDFInfo
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- CN212466137U CN212466137U CN202021484732.XU CN202021484732U CN212466137U CN 212466137 U CN212466137 U CN 212466137U CN 202021484732 U CN202021484732 U CN 202021484732U CN 212466137 U CN212466137 U CN 212466137U
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- connecting rod
- rod
- pedicle screw
- extension
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Abstract
The utility model relates to the field of medical equipment, especially, relate to an extension stick system for backbone reoperation. The utility model provides an extension rod system for spine reoperation, which comprises a first connecting rod, wherein a first pedicle screw and a second pedicle screw are sequentially arranged on the first connecting rod 1 according to the extending direction of the first connecting rod; the pedicle screw connector comprises a first connecting rod, a second connecting rod, a first connecting piece, a second connecting piece and a third pedicle screw, wherein the first connecting piece is used for connecting the first connecting rod and the second connecting rod, the second connecting piece is used for connecting the second pedicle screw and the second connecting rod, and the third pedicle screw is sequentially arranged on the second connecting rod according to the extending direction of the second connecting rod; each pedicle screw comprises a screw body and a fixing cap. The utility model provides an extension stick system for backbone reoperation can accomplish the neighbouring section of degenerating of lumbar vertebrae after the internal fixation of lumbar vertebrae and reoperation under the circumstances that remains former nail stick internal fixation device, has good industrialization prospect.
Description
Technical Field
The utility model relates to the field of medical equipment, especially, relate to an extension stick system for backbone reoperation.
Background
As a common disease and frequently encountered disease in orthopedics, degenerative diseases of the spine (such as lumbar intervertebral disc protrusion, lumbar spinal stenosis, lumbar spondylolisthesis and the like) not only cause the disability and the reduction of the life quality of a patient, but also cause great economic burden to families and society. Surgery is an important means of treatment for severe lumbar degenerative related diseases.
Wherein, the lumbar posterior intervertebral fusion fixation (TLIF/PLIF) has the widest application and definite curative effect. As the population ages, the occurrence of Adjacent Segment Degeneration (ASD) after spinal interbody fusion fixation is increasing, and clinical symptoms are generated, often requiring re-operative treatment. This requires that the original rod system be removed and then the rod (including the original section or a part of the original section) be extended for connection and fixation, which requires the preparation of a removal tool matching the original fixation, a new fixation instrument and increased medical expenses for the patient, and also has the disadvantages of large operation trauma, long time consumption and much bleeding.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide an extension rod system for spinal reoperation, which solves the problems of the prior art.
In order to achieve the above objects and other related objects, the present invention provides an extension rod system for spinal reoperation, which comprises a first connection rod, wherein a first pedicle screw and a second pedicle screw are sequentially arranged on the first connection rod according to the extension direction of the first connection rod;
the pedicle screw connector comprises a first connecting rod, a second connecting rod, a first connecting piece, a second connecting piece and a third pedicle screw, wherein the first connecting piece is used for connecting the first connecting rod and the second connecting rod, the second connecting piece is used for connecting the second pedicle screw and the second connecting rod, and the third pedicle screw is sequentially arranged on the second connecting rod according to the extending direction of the second connecting rod;
each pedicle screw comprises a screw body and a fixing cap, the screw body can be fixed on the connecting rod through the fixing cap, and the second connecting piece is matched with the fixing cap of the second pedicle screw.
In some embodiments of the present invention, each of the fixing caps includes a first locating part connected to the nail body and capable of being sleeved on the connecting rod, and a first fixing part for fixing the first locating part to the connecting rod.
In some embodiments of the present invention, the first locating part is connected to the first fixing part by a screw.
In some embodiments of the present invention, the first connecting member includes a second locating part that can be sleeved on the first connecting rod and the second connecting rod, and a second fixing part for fixing the second locating part to the connecting rod.
In some embodiments of the present invention, the second position limiting member is connected to the second fixing member by a screw.
In some embodiments of the present invention, the second connecting member is sleeved on the fixing cap of the second pedicle screw.
In some embodiments of the present invention, the first connecting rod extends in a direction that matches an extension direction of the spinal segment to be operated on.
The utility model discloses in some embodiments, when first connective bar is connected through first connecting piece and second connective bar, and the second connective bar passes through the second connecting piece and is connected with the second pedicle screw, the extending direction that the second connective bar is located the part between first connecting piece and the third pedicle screw cooperatees with the extending direction of first connective bar and the extending direction of treating operation spinal column segment, and the part that the second connective bar is located between first connecting piece and the second connecting piece closely laminates with first connective bar.
The utility model discloses in some embodiments, first connective bar is the cylinder, the length of first connective bar is 3.5 ~ 5.5cm, the diameter of first connective bar cross section is 5.5 ~ 6.5 mm.
The utility model discloses in some embodiments, the second connective bar is the cylinder, the length that the second connective bar is located the part between first connecting piece and the third pedicle of vertebral arch nail is 4 ~ 8cm, the diameter of second connective bar cross section is 5.5 ~ 6.5 mm.
Drawings
Fig. 1 is a schematic top view of the present invention.
Fig. 2 is a schematic perspective view of the present invention.
Fig. 3 is a schematic side view of the present invention.
Fig. 4 is a schematic structural view of the second connecting rod of the present invention.
Fig. 5 is a schematic structural view of the first connecting rod of the present invention.
Description of the element reference numerals
1 first connecting rod
11 first pedicle screw
12 second pedicle screw
2 second connecting rod
21 first connecting piece
211 second limiting part
212 second fixing member
22 second connecting piece
221 third fixing part
23 third pedicle screw
3 nail body
4 fixing cap
41 first limiting part
42 first fixing member
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 5. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 1 to 5, the utility model provides an extension rod system for spine reoperation, which comprises a first connecting rod 1, wherein the first connecting rod 1 is provided with a first pedicle screw 11 and a second pedicle screw 12 in sequence according to the extending direction; the pedicle screw connecting device is characterized by further comprising a second connecting rod 2, wherein a first connecting piece 21 for connecting the first connecting rod 1 and the second connecting rod 2, a second connecting piece 22 for connecting the second pedicle screw 12 and the second connecting rod 2 and a third pedicle screw 23 are sequentially arranged on the second connecting rod 2 according to the extending direction of the second connecting rod; each pedicle screw comprises a screw body 3 and a fixing cap 4, the screw body 3 can be fixed on the connecting rod through the fixing cap 4, and the second connecting piece 22 is matched with the fixing cap 4 of the second pedicle screw 12. The utility model provides an extension stick system mainly can be used for the fixed art of backbone way of escape pedicle of vertebral arch nail stick, (for example, the fusion art between the lumbar vertebrae way of escape centrum), especially can be used for taking place the condition that adjacent segment degeneracy takes place and need the operation once more to carry out the nail stick fixed in the postoperative. When the vertebral pedicle screw fixing device is used, in the prior operation process, the first vertebral pedicle screw 11 and the second vertebral pedicle screw 12 can be firstly respectively placed into two vertebral bodies, and then the first connecting rod 1 is placed between the two vertebral pedicle screws, so that the vertebral pedicle screws 11 and 12 and the first connecting rod 1 can form supporting fixation between spinal column segments. When adjacent segment degeneration occurs and needs to be operated again, the second connecting rod 2 can be fixedly connected with the first connecting rod 1 through the first connecting piece 21 and the second pedicle screw 12 through the second connecting piece 22 without taking out the first connecting rod 1, and the third pedicle screw 23 can be placed into the vertebral body of the adjacent segment due to a certain extending distance of the second connecting rod 2, so as to form stable fixed support between the segments.
In the extension rod system provided by the present invention, since the first connection rod 1 is generally used in the prior surgery, the portion of the second connection rod 2 connected to the first connection rod 1 (for example, the portion of the second connection rod 2 located between the first connection member 21 and the second connection member 22) is generally not located at the inner side (i.e. the side of the first connection rod 1 relative to the spinal canal) and the back side (i.e. the side relative to the skin) of the first connection rod 1 as much as possible, so that the operation is safe and convenient when the surgery is performed again, and the occurrence of complications is reduced.
The utility model provides an among the extension stick system, the shape and the size of first connective bar 1 do not have special restriction, and it can be among the prior art various put the nail system, as long as can cooperate with the spinal column segment of treating the operation and form suitable support between spinal column segment. For example, the first connecting rod 1 can extend in a direction generally matching the direction of extension of the spinal segment to be operated on, and can extend linearly, linearly or with a certain bending amplitude. For another example, the first connecting rod 1 may be cylindrical in shape. For another example, the length of the first connecting rod 1 may be 3.5 to 5.5cm, and the diameter of the cross section of the first connecting rod 1 may be 5.5 to 6.5mm, so that a proper supporting force may be formed between the spinal segments.
The utility model provides an among the extension stick system, the shape and the size of second connective bar 2 need cooperate with the nail body 3 and locking cap 4 and the first connective bar 1 of the third pedicle of vertebral arch nail 23, the second pedicle of vertebral arch nail 12 of fixing again usually to can cooperate with first connective bar 1 to form suitable support between each spinal column segment fixedly. For example, when the second connecting rod 2 is connected to the first connecting rod 1 through the first connecting member 21 and the second connecting rod 2 is connected to the second pedicle screw 12 through the second connecting member 22, the extension direction of the portion of the second connecting rod 2 located between the first connecting member 21 and the third pedicle screw 23 may generally match with the extension direction of the first connecting rod 1 and/or the extension direction of the spinal column segment to be operated on, and may specifically be a linear extension, which may be a straight extension or a certain bending range. The portion of the second connecting rod 2 between the first connecting member 21 and the second connecting member 22 can be closely attached to the first connecting rod 1, so that the first connecting rod 1 and the second connecting rod 2 can be firmly combined while forming a reasonable extension. The portion of the second connecting rod 2 between the first connecting member 21 and the second connecting member 22 is usually located on the inner side and the back side of the first connecting rod 1 as little as possible, and they may be arranged side by side, so that the occurrence of complications may be reduced. For another example, the second connecting rod 2 may be cylindrical in shape. As another example, the second connecting rod 2 has a length of 4-8 cm in a portion between the first connecting member 21 and the third pedicle screw 23, and the second connecting rod 2 may have a cross-sectional diameter of 5.5-6.5 mm, so that a proper supporting force can be formed between the spinal segments.
The utility model provides an among the extension stick system, first connecting piece 21 can be located between first pedicle screw 11 and second pedicle screw 12 usually through the tie point of first connecting piece 21 and first connecting rod 1. The first connecting member 21 may include a second limiting member 211 sleeved on the first connecting rod 1 and the second connecting rod 2, and a second fixing member 212 for fixing the second limiting member 211 to the connecting rod, because the first connecting rod 1 and the second connecting rod 2 are generally tightly attached to each other near the first connecting member, the second limiting member 211 may generally slide along the connecting rod to adjust the fixing position, and the second limiting member 211 and the second fixing member 212 may be threadedly connected.
In the extension rod system provided by the present invention, each fixing cap 4 may generally include a first limiting member 41 connected to the nail body 3 and capable of being sleeved on the connecting rod (e.g., the first connecting rod 1 or the second connecting rod 2), and a first fixing member 42 for fixing the first limiting member 41 to the connecting rod. The first limiting member 41 can slide along the connecting rod to adjust the fixing position, and the first limiting member 41 and the first fixing member 42 can be screwed together. Due to the existence of the fixing cap 4, the second connecting member 22 can be sleeved on the fixing cap 4 of the second pedicle screw 12 and fixed on the fixing cap 4, for example, the second connecting member 22 can include a connecting through hole matched with the fixing cap 4 of the second pedicle screw 12 and a third fixing member 221 for fixing the connecting through hole on the fixing cap 4, and the third fixing member 221 can be a fixing screw or the like. The second connecting member 22 and the second connecting rod 2 may be a unitary structure, thereby ensuring stability of connection.
The utility model provides an extension stick system that is used for fixed postoperative ASD of backbone pedicle of vertebral arch nail stick to need to operate again can accomplish the adjacent degeneration segment section of backbone after the internal fixation art and operate again under the condition that remains former nail stick internal fixation device, realize newly, old internal fixation effective connection, need not to take out former internal fixation, reduce the soft tissue damage, the operation is safe simple and convenient, can reduce the use of internal fixation material simultaneously, reduce patient's expense, can simple and direct efficient accomplish ASD's operation treatment, and good industrialization prospect has.
To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. An extension rod system for spine reoperation is characterized by comprising a first connecting rod (1), wherein a first pedicle screw (11) and a second pedicle screw (12) are sequentially arranged on the first connecting rod (1) according to the extending direction of the first connecting rod;
the pedicle screw connector is characterized by further comprising a second connecting rod (2), wherein a first connecting piece (21) for connecting the first connecting rod (1) and the second connecting rod (2), a second connecting piece (22) for connecting the second pedicle screw (12) and the second connecting rod (2), and a third pedicle screw (23) are sequentially arranged on the second connecting rod (2) according to the extending direction of the second connecting rod;
each pedicle screw comprises a screw body (3) and a fixing cap (4), the screw body (3) can be fixed on the connecting rod through the fixing cap (4), and the second connecting piece (22) is matched with the fixing cap (4) of the second pedicle screw (12).
2. An extension rod system according to claim 1, wherein each of said locking caps (4) comprises a first retaining member (41) connected to the shank body (3) and adapted to be received on the connecting rod, and a first fixing member (42) for fixing the first retaining member (41) to the connecting rod.
3. The extension rod system according to claim 2, wherein the first retaining member (41) is threadedly connected to the first fixing member (42).
4. An extension rod system according to claim 1, wherein the first connector (21) comprises a second retaining member (211) adapted to be received over the first (1) and second (2) connector rods, and a second securing member (212) adapted to secure the second retaining member (211) to the connector rods.
5. The extension rod system of claim 4, wherein the second retaining member (211) is threadably connected to the second retaining member (212).
6. The extension rod system according to claim 1, wherein the second connector (22) is sleeved to the fixing cap (4) of the second pedicle screw (12).
7. An extension rod system according to claim 1, wherein the extension direction of the first connection rod (1) matches the extension direction of the spinal segment to be operated on.
8. The extension rod system according to claim 1, wherein when the first connection rod (1) is connected to the second connection rod (2) through the first connection member (21) and the second connection rod (2) is connected to the second pedicle screw (12) through the second connection member (22), the extension direction of the portion of the second connection rod (2) between the first connection member (21) and the third pedicle screw (23) matches the extension direction of the first connection rod (1) and the extension direction of the spinal segment to be operated on, and the portion of the second connection rod (2) between the first connection member (21) and the second connection member (22) is closely fitted to the first connection rod (1).
9. The extension rod system according to claim 1, wherein the first connection rod (1) is a cylinder, the length of the first connection rod (1) is 3.5-5.5 cm, and the diameter of the cross-section of the first connection rod (1) is 5.5-6.5 mm.
10. The extension rod system according to claim 1, wherein the second connection rod (2) is a cylinder, the length of the portion of the second connection rod (2) between the first connector (21) and the third pedicle screw (23) is 4-8 cm, and the diameter of the cross section of the second connection rod (2) is 5.5-6.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021484732.XU CN212466137U (en) | 2020-07-24 | 2020-07-24 | Extension rod system for spine reoperation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021484732.XU CN212466137U (en) | 2020-07-24 | 2020-07-24 | Extension rod system for spine reoperation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212466137U true CN212466137U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021484732.XU Active CN212466137U (en) | 2020-07-24 | 2020-07-24 | Extension rod system for spine reoperation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212466137U (en) |
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2020
- 2020-07-24 CN CN202021484732.XU patent/CN212466137U/en active Active
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